Bhakti-rasāmṛta-sindhu .2.83
asyās tatra praveśāya dvāratve ’py aṅga-viṁśateḥ |
[asyaas tatra praveshaaya dvaaratve ’py anga-vimshateh |]
trayāṁ pradhānam evoktaṁ guru-pādāśrayādikam ||83||
[trayaam pradhaanam evoktam guru-paadaashrayaadikam ||83||]
Blended reading (Sanskrit + English inline)
asyās tatra praveśāya dvāratve ’py aṅga-viṁśateḥ |
trayāṁ pradhānam evoktaṁ guru-pādāśrayādikam ||83||
These twenty aṅgas serve as the door for entering bhakti. The first three aṅgas — taking shelter of the feet of guru, receiving teachings after initiation, and serving the guru with respect — are said to be the principal ones.
Purport
Altogether, Śrīla Rūpa Gosvāmī mentions twenty items, and all of them are very important. Out of the twenty, the first three—namely accepting the shelter of a bona fide spiritual master, taking initiation from him and serving him with respect and reverence—are the most important.
— A.C. Bhaktivedanta Swami Prabhupāda
Gauḍīya Ācāryas
Viśvanātha Cakravartī Ṭhākura
Gauḍīya
Bhakti-sāra-pradarśinī
Commentary
Though all twenty aṅgas act as the door to bhakti, the first three aṅgas are the most important.
My note
Source: vedabase.io